JPH0983149A - Casing structure of disk array device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a screw and the like from coming off upon exchange of each unit by providing a mount hole on the side of each exchange unit, and facilitating removal of parts without removing the screw for mounting each exchange unit to the end. SOLUTION: A plurality of exchange units A2 constituting a device are mounted in a casing 1 with a mount screw 1. When the exchange unit A2 is unusable owing to an obstacle or when the exchange unit is exchanged without interrupting a power supply to a disk array device, the mount screw 4 is untied and hence the exchange unit A2 is moved in an upper direction up to a position of an exchange unit mount hole through which a screw head passes through to demount the exchange unit A2. At this time, if the mount screw 4 is not used, the screw comes off when the screw is excessively untied to bring shortcircuiting with other active parts. The mount screw 4 is prevented from falling with the aid of a female screw provided on the side of the casing 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing structure for mounting parts of mounted parts of a disk array device.

[0002]

2. Description of the Related Art A conventional component mounting structure is designed to prevent screws from falling off, such as a structure in which a special screw is fixed to the replacement unit with an E-pocket or the like to prevent the screw from falling off when the parts are removed, or a mounting hole for the replacement unit. However, in the former case, the E tomewa may drop off, and in the latter case, the screw may be loosened too much and dropped.

For this reason, it cannot be used in a disk array device which requires a screw drop prevention structure.

In the latter case, the manufacturing cost and the manufacturing process are increased.

[0005]

In the above-mentioned conventional example, in a device such as a disk array device which requires replacement of the replacement unit in the energized state, problems such as short circuit may occur due to dropping of screws or the like. The function may not be satisfied.

SUMMARY OF THE INVENTION An object of the present invention is to provide a housing structure in which parts can be attached without dropping screws or the like when replacing each replacement unit in view of the above problems of the prior art.

[0007]

To solve the above problems, in the component mounting structure of the present invention, each replacement unit has a fixing screw hole, and the main fixing screw hole is a hole through which a screw head passes. And the hole used for the original fixing is integrated, and the fixing male screw has a diameter below the root diameter at an arbitrary distance under the neck of the conventional male screw used, and the place where the screw part is not formed, By making the mounting screw 4 larger than the plate thickness of the housing 1 in which the mounting screw 4 is mounted, one male screw has both a fastening screw part and a screw drop prevention screw part. The structure is designed to prevent the falling off.

[0008]

According to the present invention, when replacing each replacement unit as described above, when the mounting screw is loosened, it is possible to remove the replacement unit without removing the mounting screw. Since the screws do not fall off, the device will not be damaged by a short circuit even when the power is on. Further, if the present invention is applied, since the structure can be simplified, the cost of the mounting structure portion becomes advantageous.

[0009]

Embodiments of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view of an embodiment of the disk array device housing structure of the present invention, and FIGS. 2 and 3 are cross-sectional views of a component mounting screw portion.

In FIG. 1, a plurality of replacement units A2 and B3, which constitute the apparatus, are housed vertically in a housing 1, and the replacement units A2 and B3 are attached with a mounting screw 4
It is installed at.

When the replacement unit A2 becomes unusable due to a failure or when the replacement unit is replaced without turning off the power of the disk array device, the mounting screw 4 is loosened and the screw head of the replacement unit mounting hole passes through. Move the replacement unit A2 upward to the hole position and move the replacement unit A2
Although it is removed, if the mounting screw 4 of the present invention is not used, if it is loosened too much, it will fall off and short-circuit with other live parts. The mounting screw 4 of the present invention, which is machined on the housing side, does not fall off due to the female screw. If it is loosened too much, the mounting screw 4 will be in the state shown in FIG.

In the case of the exchange unit B3, the exchange unit B3 is inserted into the square hole of the housing 1 and held by the rails above and below the exchange unit. The exchange unit is moved like the exchange unit A2 to exchange the exchange unit. When the structure is impossible, the mounting hole of the unit B as shown in FIG. 1 is a cut mounting hole.

As shown in FIG. 3, the mounting screw 4 is attached in a state in which the fastening screw portion is loosened and the fall-preventing screw portion does not fall from the housing 1, so that the replacement unit B3
In order to remove it, the mounting hole of the replacement unit B3 cannot be removed unless it is larger than the screw head of the mounting screw 4.

For this reason, the positional relationship between the mounting hole and the upper end of the screw head of the mounting screw is determined by the L dimension, but the intended function can be achieved by setting this dimension to more than 0 mm.

[0016]

As described above, in the component mounting structure of the disk array device according to the present invention, the replacement unit can be replaced in the energized state by the mounting hole which does not require a complicated structure and the mounting screw which does not drop even if loosened. It is possible to provide a component mounting housing structure that can be easily implemented.

Furthermore, maintenance workability is also facilitated, and there is an effect that a manufacturability is easy and an inexpensive component mounting structure can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a disk array device housing structure of the present invention.

FIG. 2 is a sectional view of the same part mounting screw part.

FIG. 3 is a sectional view of the same part mounting screw portion.

[Explanation of symbols]

1 ... Housing, 2 ... Exchange unit A, 3 ... Exchange unit B, 4 ... Mounting screw.

Claims (3)

[Claims] 1. A component mounting structure for an electronic device comprising a hard disk and an electronic component, wherein each replacement unit mounted inside a casing and replaced when energized is provided with mounting holes on each replacement unit side. It has a structure to attach with a screw and makes it easy to attach and remove parts without removing the screw to the end, which is a feature that the parts can be replaced while the power is on and the screws do not fall off. Case structure of disk array device. 2. When the mounting screw 4 is loosened, as shown in FIG. 3, when the screw head naturally falls, the screw head does not come into contact with the mounting hole of the replacement unit due to the positional relationship with the mounting hole of the replacement unit. The housing structure according to claim 1, wherein a dimensional relationship is taken into consideration (L dimension is 0 mm or more) so that the screw head of the male screw and the replacement unit mounting hole do not come into contact with each other. 3. The mounting screw 4 is a male screw having a root diameter at an arbitrary distance below the screw neck, and a portion not forming a screw portion is formed at a constant interval. The housing structure according to claim 1, wherein a male screw is used, which also has a screw portion for use.